Most obviously, plan9port derives from
Plan 9 from Bell Labs
and would not exist without the work of the Plan 9 team over the
past many years.

Rob Pike suggested the original X11 port of libdraw years ago,
as part of drawterm, and strongly encouraged the Mac OS X work.
He has also been a consistent source of good ideas to hide
the ugliness of modern Unix.

William Josephson handled
troff(1)
(with Taj Khattra) and many of
the supporting programs. He also inspired the thread library
clean-up and has ported a handful of applications.

Andrey Mirtchovski and Axel Belinfante have done significant
work dealing with X11 corner cases and fine-tuning
rio(1).
Axel never tires of finding bugs in the SunOS port.

Latchesar Ionkov has contributed many fixes to tricky bugs, and
got factotum(4) up and running.

Many other people have provided help,
ported programs, written bug reports,
sent useful patches, and gotten plan9port running on new
systems.

Bigelow & Holmes, Inc. created the screen fonts in the
luc, lucm, lucsans, and pelm
directories and granted permission to redistribute them with plan9port.